title: DC magnetic susceptibility and neutron powder diffraction analysis of the perovskite-type compounds LaYbO₃ and LaHoO₃.
abstract: Magnetization measurements and neutron powder diffraction analyses followed by Rietveld refinement have been carried out in order to investigate the magnetic structures of LaYbO3 and LaHoO3. Both compounds exhibit a negative thermal expansion along the a and b axes. In LaYbO3 Yb(3+) spins order at 2.4 K according to a FyGz-type structure, belonging to the Pn'ma' magnetic space group. Conversely, LaHoO3 is paramagnetic down to 1.5 K.
authors.affiliation: CNR-SPIN, Corso Perrone 24, I-16152 Genova, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Martinelli
authors.forename: R
authors.initials: R
authors.lastname: Masini
authors.forename: C
authors.initials: C
authors.lastname: Artini
authors.forename: G A
authors.initials: GA
authors.lastname: Costa
authors.forename: L
authors.initials: L
authors.lastname: Keller